Audible alarm for coolers for internal-combustion motors



Jan. 23, 1923.

E. L. WILKISSON.

AUDIBLE ALARM FOR COOLERS 'FOR INTERNAL COMBUSTION MOTORS.

HLED our. 6., 1921.

Patented den. 2d

arr i EDWARD L. WILKISSON, 0F BROOKLYN, NEW YORK, ASSIGNDR 03E ONE-HALF TO EMIL E. f TIEINIG-ER, OF LONG ISLAND CITY, NEW YORK.

AUDIBLJE ALARM FOR COOLERSFOR INTERNAL-COMBUSTION IIIOTORS.

Application filed October 6,

To all whom it may concern Be it known that l, EDW'ARD L. VVILiUs- SON, a citizen of the United States, and a resident of the borough of Brooklyn, county of Kings, city and State of New York, have invented certain new and useful Improvements in Audible Alarms for Coolers for Internal-Combustion Motors, of which the following is a specification.

While applicable to the cooling systems of internal combustion engines generally, my improvements are designed more especially for use in conjunction with radiators, so called, with which automobile motors are equipped for the purpose of reducing the temperature incidental to operation by means of a circulatory water vehicle in a manner well known in the art,-my object being to afford a sure and effective alarm device which will audibly and automatically announce an increase in temperature of the cooling liquid vehicles sufficient to generate steam pressure within said radiator; and my invention consisting essentially in combining with a radiator, a steam-aetuatable whistle positioned above the water level therein, substantially as and for the purpose herein set forth.

In the accompanying drawings I have shown a practical embodiment of my invention in which my audible alarm is positioned on the screw cap usually provided for the closure of the filling neck of an automobile radiator, although the steam-announcing device may be otherwise positioned to communicate with the interior of the radiator above the normal water level thereof with like result, and without deviating from the spirit and intent of my invention in this respect, which contemplates broadly any combination and arrangement of whistle and radiator adapted to utilize steam pres sure in the latter as a sounding medium in a manner equivalent to that shown and do scribed herein.

With this understanding,

Fig. 1, is a sectional. elevation of the up per portion of a radiator, its filling neck, and closure cap, thelatter having my audible alarm mounted thereon;

Fig. 2, is a horizontal section taken upon plane of line 2--2, Fig. 1, and looking in the 1921. Serial No. 505,861.

direction of the arrows at the extremities of said plane l1ne;

Fig. 3, is an elevation of the cap, etc., r

shown in the preceding figures.

In Fig. 1 of the drawings, It, represents the upper medial portion of the tank of a radiator of an automobile, for instance, formed with the usual cylindrical filling neck N, and provided with the usual overflow pipe 0.

The closure cap C, may be 01 any desired external configuration, and it is formed with a central opening 0, for the accomodation of the whistle tube W, the lower portion of which is screw-threaded for engagement with a nut member w, for securing said whistle tube W, in position, the latter being formed with the annular bearing shoulder w, acting in conjunction with said washer member 10, and packings 7;, being interposed between the cap plate and the said parts w, w, to insure a tight joint.

The upper portion of the whistle tube W, is also screw threaded for engagement with the dome section 10 of the whistle, considered as a unitary device,the lower portion of said dome section 20 being of inverted cup shape, with relatively thin side walls, the edges of which act as impingement surfaces for the steam ejected through the op enings te te in the sides of the whistle tube '21).

The lower portion of the nut member to, is preferably flared outward, or of inverted funnel shape, to concentrate the flow of steam to and through the whistle tube WV; and it will be noted that the dome member 202, is adjustably mounted (by means of the screw-threaded connection) on the whistle tube W, so that the tone or pitch of the whistle may be regulated according to desire or requirements.

The type of whistle herein shown. is ob viously only one of several oi well. known forms thereof that may be substituted. and used for the purpose, with like result, so that I do not wish to limit myself in this respect, the pro-requisite being a sounding device operable by steam pressure whenever generated within the radiator casing.

The temperature of the water used as a circulatory vehicle for the elimination of excess of Leat in tle motor may reach as high as 170 to 18W l aljirenheit with eliliciency, so that the boiling pointof water (BL?) is proxiniated. Hence, detective pump action, or impediment of circulation from any cause, or excess of heat from carbonization, or retarded sparking and consequent slow combustion in the motor or other cause, soon results in the generation of steam within the radiator casing, and overheating, with possible injury to both radiator and motor, so that positive and timely warning of such danger is most desirable in order that the same may be promptly averted.

I am aware that the state of the art discloses means for visually indicating the presence of steam in an antoradiator, but my alarm is primarily and essentially an audible one, the presence of steam being indicated by sound in such manner as to be efleotire, where a purely visual s gn might iliail. to draw attention lo the danger in Yolved.

Hence, while I do not seek to rover the utilization of steam pressure within the radiator as a means of warning in the abstract, What I do claim, and seek to cover by Letters Patent, is,

The combination with a radiator. ot a, 

